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APPLICATION FILED MAR. 4. I9I6.

Patented Aug. 29, 1916.

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WILLIAM L. SCHELLIENBAtCH, 0F WOMIIMG, UHIO.

narnia To all whom it. may concern:

Be it known that ll, WILLIAM L. SCHELLEN- BACH, a'citizen of the United States, resid-ing at Wyoming, in the county of Hamilton and State of hio, have invented certain new and useful Improvements in Lathes, of whichthe following is a specification. p I

My invention relates to improvements Vin en 'ne lathes.

ne of its objects is to provide an im'- proved arrangement of drivin parts vifhereby the latheis-read'ilyconvertlble from a direct belt drivenlathe to ay geared lathe.

Another object is to provide a lathe adapted to be employed either as a simple directly belt driven lathe, or as a more complicated geared lathe, and in which the head 4stock,l

spindle and back gear sha-ft are common to both types and may be employed with slight change to constitute a lathe of either type, or to enable the lathe of-either type to be'converted to the other as desired.

lAnother' object is to provide a lathe of relatively less parts and capable of takingthe place of what has heretofore constituted two separate and ldistinct types of lathe.

`Another object is to provide an improved arrangement of driving mechanism whereby ,power is first subjected to the conti-bl of tion with a .head-stock spindle feed shaft. 'and back' gear shaft two interchangeable headstockcovers, one of which is provided f tion with a head stock, spindle, lfeedvshaft,y and back gear shaft a detachable cover care' aai-ying Inger controlling mechanism to stop,

'from one type to another.

with power controlling and speed changing mechanism whereby the substitution of one cap for the other serves to convert thel lathe lAnother object is to lprovide in combinastart, rev rse, and vary the speed of the spinsaidcover is in position, and to enablethe spindle to be directlyA belt driven 'when said cover' is detached.

`Another object is to'provide an improved Varrangement of head stock, spindle, feedv 'shaft and backgear shaft.

My invention also comprises certain de'- all of which will be fully. set forth in the de-` scription of the accompanying drawings in which:

.Figure 1. is a top' tionof the headstoc ot' my improved lathe fittedup to be driven directly by ai cone pulley on the lathe spindle and with the headstock cover removed. Fig. 2. is a side elevation of the headstock withthe spindle and cover detached. Fig. 3. is?. forwardend View of the headstock of Fig. 1, with cover Specification of Letters Patent. Patented dug., 2W, llFll. i application tiled March t, 1916. ySerial llto.v www.

plan view, partly in secl in position. Fig. t is a sectional detail of one of the back gear shaft sleevesv detached. Fig. 5 is a top pflanview of the cover ofFig. 3 detached.' iig., 6 is a rear end view of the headstock and cover of Figs. 1 to 3. Fig. 70 I is a rear end view ofthe headstocls. with a diierent cover `to that of Figs. Band 6 in vposition thereon. Fig. 8 is a sectional detail of-the feed shaft and gear detached. 'Fig 9 is a central longitudinal section of the spindle 4sleeve detached. Fig. 10 isa top plan View of the headstock and cver of Fig. 7'.

Fig. 11 is a side elevation of the rocker arm carried by the back gearshaft and providing for speed. changes between the geared spindle land the back gear shaft, and means to rock the same. Fig. 12 -is a sectional View on line v o of Fig. 11 Fig. 13 is a sectional detail of the gearedspindle and its driving clutch,

reverse and gear shifting mechanism, taken online w m of Fig. 7. Fig. 14 is a side elevation of the sliding geared spindle. Fig. 15 is an end view of the same. Fig. 16 is a side elevation, detached, of the sleeve in which .the geared spindle Fig. lll slides. Fig. 17 is an end .view of the same on a slightly/ea.

. larged scale. Fig. 18 is a view of the larger geared. spindle clutch member'detached.A Fig. 19 is a view 'of the smaller geared spindle clutch member detached. r.Fi 20 is a view of the cage'carrying the p anetary gears a perspective'view of a clutch shifting dog detached. Fig. 25 is a sectional detail ot a portion of the-back gear shaft and its shittin mechanism. Fig'. 26 is a View .ot the meshing with the clutch members Figs. 18

ica

spindle and tace gear detached. Fig. 27 is an tails of form, combination and arrangement end view oit the geared driving spindle shitt-l driven from a countershaft.

. The accompanying'drawings represent the preferred embodiments 'of my invention, 1n which A represents the maln frame or base of the headstock, which is closed at the bottom and sides to form an oil well or container, and a forward compartment housing the face gear. The headstock is provided with aforward bearing 2 and a rear bearing 3 for the lathe' spindle B and a forward bearing 4 and rear bearing 5 f'or the back gear shaft C. The spindle B -forward of the forward bearing 2 has a nose 6 which .y serves as a guide for chucks and work and has a tapered bore to receive the usual detachablelive center, and an annular integrall flange Lto which is rigidly secured the face gear '8. The face gear 8 has its teeth housed fwithin the forward compartment of the headstock to protect them from met-al chips and dirt, and the'periphery of thecwheel 8 forward of said gear teeth makes a close or dirt ti ht joint with the adjacent semi-anfular face 9 of the frame A. .The support for the bearings 2.and 4 forms a partition 4 to divide the headstock into two compartments and to retain the oil in rear of said partition.

Mounted on the spindle B between its bearings are a sliding clutch member 10 `splined to the spindle, a sleeve 11 loosely journaled on the spindle and provided with clutch teeth12 to 'engagethe-dlutch teeth of the clutch member 10, and a gear14 rigidly mounted on the rear end of the sleeve 11. A

- gear15 of the same diameter and pitch as the gear 14 is keyed to the spindle B in rea'r of and spaced from the gear 14. A thrust collar is interposed between the gear 15 and the rear spindlebearing 3 and va collar 16 and lock nut 17 outsideofthe rearfbearing 3 l prevent excessive endwise movement of spindle B. l

lThe backgear Shaft C is. movable endwise in its bearings and is provided at its forwa r"r l .;-'--k its position. end with a1 pinion 18 t'ofmesh with'the gear -.wheel"8 lon the spindle B. The forward bearing 4 of vthe-backgear shaft is of larger .bore than the back gear shaft, and a sleeve A19 is mounted loosely on the back gear shaft and splined in the bearing 4. Said sleeve hasdownwadly projecting ears 20 to beengaged by a crank pin 32 on a shifting rod or shaft 21 to move the Sleeve 19 and back gear shaft endwise. A collar 22 holds the sleeve 19`4 in place endwise relative to the back gear shaft. y

.At the rear end of the back gear shaft iS either direction endwise.

a sleeve 25 through which the back gear` shaft slides endwise and to which it is splined sothat the sleeve 25 rotates with the back gear shaft.l The sleeve 25 hasV a bushing 24 which is journaled in the bearing 5 and held against endwise movement by a collar 26. On the sleeve 25 is rigidly mounted agear 28 which meshes with the gear 14 on the sleeve 11.V

The shifting rod 21 is journaled at opposite ends in the head stock A and has a limited movement endwise, and a limited rocking or rotary movement which 'are controlled by means of an irregular slot 29 in a dial plate 30 through which slot projects a crank arm 31 carrying an operating handle. The endwise movement of rod 21 serves to engage anddisengage a crank pin r32 carried thereby with the recess between the ears 2O of sleeve 19 while the rocking .movement of the krod 21 with its operating lever 31 inI the right hand portion of slot 29 serves to shift lthe back gear shaft in When the op'eratf ing lever is in the left hand portion of the slot 29 the pin 32 is out of engagement with ears 20 and a pinion on the rod 2,1L meshes with a rack bar on the shifting lever 33 which engages the annular groove of clutch member 10 to shiftwsaid clutch member into or out of engagement -With the sleeve 11. The shifting lever 33 slides endwise on a .stud sliaft 34. The endwise movement of rod y21 insures the clutch member 1I) and back gear shaft maintaining proper relative positions, and prevents interference and injury ,to the lathe by careless operators. A feed shaft 35 isy journaled in bearings in the headstock below the spindle B and is ladapted to drive a train of gears to transmit a power feed to the tool carriage. Splined upon the shaft 35 is a gear 36 which is adjustable endwise on shaft 35 so as to lmesh either with lthe Agear 14 on the sleeve 4 l1 or with the gear 15 on the spindle B7 or(l to occupy an intermediate position out oft engagement with either of said gears. An operating lever 37 having an eccentric pin` to engage the annular recess 38 in the hub of gear 36 enables said gear to be shifted from one position to another, and indicates Where a simple inexpensive type of lathe is desired inlyvhich the spindle B is directly drivegi bybelt, a cone 'pulley E is detachably secured rigidly upon the sleeve .11, and its forward end supported by means of a detachable disk or hub 39. When so employed a headstock cover F is preferably employed serving as a housing and protection for-the gears and having a central opening`40; for the'belt to reachthe cone V.pulley E. Said cap is preferably attached to the headstock A'by means of separable hinges 4l at the forward edge and bolts 42 at thei monaca rear, and is arranged with a semiannular face 43 to closely itabout the upper portion of gear 8 to prevent the entrance of a moderate range of threads land to accurately *perform a considerable range of ordinary and heavy lathe Work, and having few and simple parts could be produced and marketed at a relatively low figure. Also oil could ^not be employed in quantity inthe oil well.

Where -it is desired to have a Wide range of tool carriage feeds to` cut threads of Wide range, and to perform both light and heavy work with accuracy and to run the operative parts in oil furnished by a splash system l[ provide an additional shaft or spindle H having change gears to secure a Wider range of lspeeds with both forward and reverse feeds, and the spindle H is preferably mounted and journaled in a detachable cover K which is interchangeablel in position on the headstock A Withthe4 cover F, with provision to transmit-motion fromy thespindle H to the back gear shaft C andv thereby convert the simple directly belt driven `lathe into a more complicated geared head lathe at any time desired by the simple operation of substituting one cover for anotherl on the headstock, and With the cone pulley in place or detached i as desired'. -l[ am thus further enabled to provide a lathe of the maximum requirements with a material saving in the number of parts or units required in its production, and also to use duplicate parts for the major portion of both the simple and complex type-of lathe, and to enable conversion from one to the other to be readily made at any time.

lin Fig. 30 l have illustrated a geared head similar to that of Figs. 7, 10, and 13 in which is provided an .opening 40 corresponding to the opening 40 in the head Fig. 5, anda cone pulley E similarto that illustrated as E in Fig. 1. A countersliaft 104 is supported in hangers 105 and provided With a cone pulley 101 opposite the cone pulley 'E'yfrom vvhich the pulley E may be driven by a belt 100, preferably in either direction. A pulley 102 is also provided on the shaft 104 opposite the pulley 'R of the geared head to drive the pulley F by means of a belt 106. A sliding clutch member 103 splined to shaft 104 and operated by a shifting lever, not shown, serves to selectively connect either pulley 101 or 102' in driving relation With the shaft I104,

and at an intermediate position to discon.

neet bothv of said pulleys from shaft 104. rllhis enables the lathe spindle to be driven as desired either through/the belt and cone pulley F', or through the belt 102 and pulley R. l

In Fig. 10 is illustrated the general relative position of the parts when the cover K the tube 45 and is adjustable therein by means of an annular groove 49 at one end of the cage 48 which groove is engaged by a roller "50 carried by a crank pin on a crank arm 51 mounted on a rock shaft 52. The opposite end of the shaft 52 projects through the front .ofthe cover K and is provided with a crank arm 53 to sweep over the face .of a dial plate 54 and is provided with a spring latch pin 55 to lockthe crank arm 53'to several say six different positions on the dial plate, thereby enabling the spindle H to be shifted endwise and locked at six di'erent positions which serves to shift the pinion 46 through a series of three operative positions and then to shiftthe gear 47 successively through the same operative positions. 'e

A rocking segmenti L is loosely journaled upon the sleeve 25 and its bushing 24 upon opposite sides of the gear 2,8 so as to have an limited movement concentrically about the axis of the back gear shaft. The seg-y ment L is also' provided with a shaft 56 upon Which are loosely journaled a series say three gears 57, 58 and 59 of di'erent diameters, which gears are all locked together and move in unison, the gear 57 `being in mesh With the gear 28 onthe back gear shaft. rllhe segment L is attached pivotally by means of a link 60 to a nut 61 having a coarse pitch thread which is threaded into a socket in a thimble or cap '62 which is journaled in a recessin the front of the cover K. A crank arm 63 is i attached to the thimble 62 so as to turn therewith and tosweep over the face of a dial plate 64 and a spring latch pin 65 enables the thimble 62 'to be locked to a series say six or more different positions each of Which indicates a diderent position fore the gears 457, 58, 59 circumferentially about the axis of the back gear shaft, and i each of these positions brings one of the gears 57; 58, 59-into position to mesh With one or other ofthe gears 46 and 47 and serves to transmit' power/from the spindle H ata variety of diderent rates of speed to the back gear shaftl and thence to the lathe spindle either directly or through its clutch sleeve. l

The tubular recess 45 has a stationary cap 67 at one end and a stationary cap 67 at the opposite end. N represents a sleeve which is splined to the spindle H and is mounted at one end in a roller bearin'g 68 carried by the stationary bearing member 69 supported by 'the Walls of recess 45. At the opposite end sleeve N has a plug 90 the outer end oi which is journale'd in a roller bearing 91 mounted in the cap 92.v A clutch member P is loosely journaled over a portion of the sleeve N and is supported by a roller bearing 66 carried by the 'stationary cap 67.

roller bearing 70 is also interposed 'between the inner `end of the clutch member P and the sleeve N. The cap 92 is threaded on to the end of the hub of clutch member P. Thus the clutch member P is journaled with reference to the cover K by the roller bearing 66 and in turn is supported internally by the roller bearings 70 and 91 with reference to the sleeve N which steadies clutch P against irregular movement upon its axis andfurnishes a journalkfor sleeve N Without necessity of actual contact between said sleeve and the hub of clutch P which at timesy travel in the opposite directions. A`

belt pulley R driven at uniform speed is mounted on and drives the clutch member P. A belt pulley- R- may be employed vto drive a circulating pump.

A clutch member S is keyed to and .slides endwise on the sleeve N, being shifted thereon endwise to engage and disengage the clutch member P by means of dogs 72 let into slots in the hub of clutch `member S and-pivoted thereto, said dogs engaging slots 93 in the -sleeve N by means of which clutch member S is thrust endwise thereon. A collar or ring 7 3 slides on the hub 74 to engage and actuate the'dogs 72, said collar 7 3 having 'an annular groove engaged. by studs 75 carried by a forked lever 76 which is pivotally supported upon studs 77 and 7 8 passing through the Walls of the tubular recess 45. The stud shaft 78 carries outside of the cap K a lever 79 one end of which is connected to a shifting lever and the opposite end iskprovided with a 'stud 80 which at one position of lever 79 engages'the head member S and has journaled therein a plurality of pinions 84 which mesh with the internal gear 71 of, clutch member P and also with the externalgear 85 ofthe clutch member S causing said pinions 84 toJ serve as planetaryv gears and to travelwith the 2 cage 83 about `the clutch member S when the cage 83 is not locked against rotation. The split ring 82 normally loosely encircles the periphery of cage 83,' but when engaged by the push pin 81, the ring 82 closes uipon and locks, the cage 83 against rotation, tlereby causing the pinions 84 to rotate upon fixed axles instead of rotating axles and thereby transmitting power from the clutch member P toclutch member S in the reverse direction to that when cage 83 is loose. When the clutch members P and S are forced together by the dogs 72 the pin ions 84 cease to rotate and the clutch members P and S rotate together at one speed, thereby securing another rate of speed for- Ward for the spindle H.

In the modification Fig. 29, the cage 83'. and planetary gears 84 are omitted and otherwise the clutch members P and S are mounted and operated as heretofore olescribed, the split ring 82" being. mountedy upon and adapted to close upon the periphery of the clutch member S and to act as a brake to stop the rotation of the driving spindle H, and its sleeve N. A

The relative diameters of the-gears 46 and 47, and 57, 58 and 59 may be variously combined, butthey are capable of and yield particularly desirable rangesofspeed when the larger gears are of diameters representing respectively the second and third powers of the smaller gear.

.The mechanism scribed is capable of considerable modification Without departing from the principle of my invention.

Having describedmy invention, what I claim is: v

1. In a lathe a rotatably mounted lathe spindle, a rotatably' mounted sleeve encircling a portion of said spindle,- means to clutch said sleeve and spindle together` a back gear shaft, mechanism to drive said back gear shaft through said sleeve, mechanismto drive said sleeve from said back gear shaft, mechanism to drive said spindle from said back gear shaft, a driving spindle and mechanism to drive said back gear shaft from said driving spindle.

2. In a lathe a. rotatably mounted lathe spindle, a rotatably mounted sleeve encircling a portion of said spindle, means to clutch said sleeve to said spindle, a back gear shaft, mechanism tp drive said back gear shaft through said sleeve, mechanism to drive said sleeve from said back gear shaft.' mechanism to drive said spindle from said back gear shaft, a driving spindle, and mechanism to drive said back gear shaft at relatively diiferent rates of speed from said driving spindle.

3. In a lathe a rotatably mounted lathe spindle, a rotatably mounted sleeve encircling a portion of said spindle, a back gear shaft, mechanism 'connecting said back gear herein illustrated and de-k intatta shaft and sleeve in driving relation, mecha-4 selectivelyv employed to drive said back gear bf initial belt driven shaft from said sleeve and to drive said sleevethrough said back gear shaft.

4. ln a lathe a rotatably mounted lathe spindle, a rotatably mounted sleeve encircling a portion of said spindle, a back gear shaft, mechanism connecting saidback gear shaft and sleeve in driving relation, mechanism connecting said back gear shaft and spindle in driving relation, mechanism to be selectively 'employed to drive "said back gear shaft from said sleeve and to drive said sleeve through said back gear shaft, a feed shaft, and mechanism to selectively connect said feed shaft in driving relation vWith said sleeve or in driving relation with said spindle. l

5. ln a lathe a rotatably mounted'lathe s indle, a rotatably "mounted sleeve encir- 'c ing a portion ,of said spindle, -means to clutch said sleeve `to said spindle, a back gear shaft rotatably mounted and adjustable vendvvise to engage .iti with and disengage it from driving relation with said spindle, a.

sleeve telescopically connected to and rotatable with said back ear shaft,y mecha-l nism to engage said bac gear shaft sleeve in driving relaton with said spindle sleeve,

a driving spin e,y and mechanism carried rotatably upon said back gear shaft sleeve to selectively establish driving relations between said driving spindle and said back gear shaft. j

6. ln a lathe a headstock, a lathe spindle journaled in said headstock, and a plurality elements to be interchangeably. employed to drive said spindle in the same direction. l

7. In a lathe a headstock, a spindle journaled therein, a sleeve encircling a portion or said spindle, 'a clutch to yengage said lsleeve with said spindle, a back gear shaft, mechanism .to connect said back gear shaft and spindle in drivingfrelation, mechanism to connect said back gear shaftandsleevein driving relation, and means to be selectively employed to drive said `'\lo`acl r gear shaft through said sleeve and toldrive said sleeve thrugh said back gear sha 8. ln alathe an elemental headstock unit having a spindle journaled therein, a gear loosely mounted concentrically with ysaid spindle, means to clutch said' gear to said spindle, a gear carried rigidlyy bysaid spindle, a back gear shaft journaled in said headstock and provided with a pinion to engage said fiXed gear on thes indle, mean's to connect said backl gear shaft and loosely mounted spindle gear in driving relation, a sleeve to 'which .said back gear; lshaft is splined, a gear mounted'upony said back gear sleeve`,and means to drivesaid back gear and spindle through the gear on said'back gear sleeve. l

9. ln a lathe a headstocl, a'lathe s indle terchangeably employed to drive said s inrdle and back-gearl shaftin the samedirec"` tion.

10. lna lathe a headstock, a lathe spindle journaled in said headstock, a rotatably ymoun'ted sleeveencircling a portion of saidspindle, means to clutch said sleeve to said spindle, a back-,gear shaft journaled in said headstock, mechanism tol connect said back gear shaft and sleeve in driving relation, y

mechanism adjustable to connect said back. gear shaft and spindle in driving relation, 7 and a plurality of primary driving-members to be interchangeably employed to drive' said spindle and back-gear shaft` 11...][n 'al lathe a headstock, a lathe spindle journaled therein,y means forA transmitting power at variable speed to sa1d-sp1ndle through a belt traveling at variable speed,

and independent means to transmit a plu"90 l rality-v of speeds to said spindle in the same direction from a belt traveling at a fixed f speed.

12. ln alathe a headstock, a spindle journaled' therein, a loosely mounted sleeve gear encircling said. spindle, and adapted to constitute alternately a driving element and a driven element, means to clutch said sleeve gear to said spindle, a face gear fixed on said spindle,` a back gear shaft carrying a pinion toA alternately engage and disengage said face gear, means to engage and` disengage said pinion from the face gear and means tol engage and disengage said sleeve gear with ysaid spindle. 2

13. lln. a lathe a rotatably mounted lathe spindle, a rotatably mounted-sleeve encircling-a. portion, of said spindle, means to clutch said sleeve to said spindle, a back gear shaft, mechanismto drive said sleeve from said back gear shaft, mechanism to drive said spindle from said back gear shaft, a driving spindle, mechanism to drive said back gear shaft from said driving spindle, and means -to selectively reverse the direction of rotation of said driving spindle.

14;. rlln a lathe a headstock, a spindle journaled therein, a 'sleeve gear encircling a portion of said spindle and adapted to be clutched to s aid spindle, a back gear shaft,

means enabling saidsleeve gear to act as the l driving element for said back gear shaft and spindle, and an independent driving means wherein said slee-ve gear performs the function of a driven element.

k l5. ][n a lathe, atlieadstocln naled therein, a loosely mounted sleevel gear encircling a portion of said spindle and fitted to receive a' plurality of belt pulleys,

a spindle jourmeans to clutch said sleeve gear to .said spindle, a gear rigidly mounted on said spindle,

' a back gear shaft having a pinion to engage cover plate, and means to engage said sliding gears with said cone gears.

` 16. In a lathe a headstock, a splndle journaled therein, a fixed gear on' said spindle,

a loosely journaled gear on saidv spindle 4said spindle fixed gear,

means to clutch said loosely journaled gear to said spindle, aback gear pinion to engage a gear driving said back gear pinion .and meshing with said loosely journaled gear, and two interchangeable headstock cover plates, one having an opening for the admission of a driving' belt.

to the interior of said headstockiand the other cover plate being closed and provided 4with a variable speedelement to transmit motion from its exteriorto'said spindle.

17. Ina lathe a headstock, a lathe spindle journaled therein, a cone pulley journaled on said spindle,a headstock cover having an opening to admit a driving belt to said mounted on said spindle, a

cone pulley, and a closed headstock cover interchangeable with said open headstock cover, said closed headstock cover being provide-d' with means for transmitting power from the exterior thereof at variable speed to said spindle when said closed headstock cover is in place on the headstock.

18.l In a lathe, a headstock having achamber constituting an oil container, a lathe spindle journaled in said headstock, a loosely journaledv sleeve gear encircling a .portion of said spindle, and adapted to receive a step driving pulley, a gear rigidlfy;

back gear sha having a pinion to engage said fixed spindle gear, and a back gear meshing with said sleeve gear, means to clutch said sleeve gear to the spindle, a headstock cover having an opening to admit a driving gear to the pulley on said sleeve gear, and a closed headstock cover interchangeable With said open headstock cover, a variable speed driving element mounted in said closed headstock cover to transmit motion from the exterior thereof to said spindle and back gear shaft,

said closed headstock cover forming with said headstock a clo's'ed oil container within which the operative parts may be lubricated -by a splash system of lubrication..

19. In. ay lathe a headstock, a lathe spindle journaled therein, a fixed gear on said spindle,

clutch said sleeve gear toV said spindle, a

. gage l into and out of engagement therewith a\back a loosely journaled sleeve gear encircling a portion of. said spindle, means to back gear shaft having( a .pinion to engagel said fixed spindle gear and a back gear in mesh with said sleeve gear, a detachable headstock cover, a variable speed driving element mounted in said headstock cover and detachable therewith to transmit power at variable speed from the exterior thereof to said spindle andback gear shaft, means carried by said headstock cover to change the speed of said variable. speed element, and means carried by said headstock cover to engage and disengage said variable speed element in driving relation with the lathe spindle.

20. In a lathe aheadstock, a lathe spindle journaled therein, a fixed gear on said spindle, a loosely journaled sleeve gear encircling a portion of saidI spindle, means to clutch said sleeve gear to said spindle, a back gear shaft having a pinion to engage said fixed spindle gear and aback gear in mesh with said sleeve gear, a detachable headstock cover a reversible variable speed drivingjelement mounted in said headstock cover and detachable therewith to transmit power at variable speed from the exterior thereof to said spindle and back gear shaft, meanscarried by said headstock cover to change the rate of speed of the s lindle, and means .carried by said headstocr .cover to reverse the direction of rotation of said spindle.

21. In a lathe, a headstock open at the top and closed at the sides and bottom divided by a partition into an oil containing compartment and a face gear housing compartment, a lathe spindle journaled therein, a face gear rigidlymounted on said spindle and closing an opening in said housing compartment with its gear teeth within said housingv compartment, a loosely journaled sleeve gear encircling a portion of said spindle, means to clutch said gear sleeve to said spindle, a feed shaft journaled in said headstockv and provided with meansl to selectively connect it in driving vrelation with said spindle and said sleeve gear, a back gear shaft provided with a pinion to ensaid face gear and adjustable. endwise gear in mesh with said sleeve gear and mounted upon a sleevey splined to said back gear shaft, and shifting mechanism having a position .in operative relation with said spindle clutch and out of operative relation with the back gear shaft to shift said spindle clutch, and another position in operative relation with said back gear shaft and out of operative relation withi said spindle clutch to shift said back gear shaft, anda cover-plate fitted over the open top of said headstock. and completingr the protective housing for said spmdle face gear.

22. In a lathe a headstoc a spindle Journaled therein, a cone pulley 'journaled on 1 `(lle journaled therein,

Liteee 1 l l J i Vsaid spindle, back gear'mechanism, means to engage and disengage said back gear mechanism to drive said spindle from said cone pulley, and means to selectively drive said spindle at variable speed and in either .direction independently of said cone pulley.

23. In a lathe a headstock, a lathe spina headstock cover,

' mechanism contained within said headstock and cover` providing .afplurality 'of means to selectively drive said lathe spindle.

24E. In a lathe a headstock, a lathe spindle journaled therein, 'means contained Within said headstock to selectively drive said Vspindle by belt traveling at variable speed or by belt traveling at constant speed i at variable speed by a belt to drive said" spindle means to clutch said sleeve tosaid spindle, and independent means adapted to be selectively employed to drive said spindle. ln testimony whereof I have aiiixed my signature in the presence of two Witnesses. WILLIAM L. SCMLLENBACH'. `Witnesses:

C. W. MILES, W. THORNTON BOGERT.

a sleeve journaled on said 

